<template>
  <div class="dashboard-container">
    <div class="app-container">
      <el-card>
        <el-tabs>
          <!-- 放置页签 -->
          <el-tab-pane label="角色管理">
            <!-- 新增角色按钮 -->
            <el-row style="height:60px">
              <el-button
                icon="el-icon-plus"
                size="small"
                type="primary"
                @click="hAdd"
              >新增角色</el-button>
            </el-row>
            <!-- 表格 -->
            <el-table :data="roles">
              <el-table-column label="序号" width="120" type="index" />
              <el-table-column label="角色名称" width="240" prop="name" />
              <el-table-column label="描述" prop="description" />
              <el-table-column label="操作">
                <template v-slot="{row}">
                  <el-button size="small" type="success">分配权限</el-button>
                  <el-button size="small" type="primary" @click="hEdit(row)">编辑</el-button>
                  <el-button size="small" type="danger" @click="hDel(row.id)">删除</el-button>
                </template>
              </el-table-column>
            </el-table>

            <el-row type="flex" justify="center" align="middle" style="height: 60px">
              <!-- 分页组件 -->
              <el-pagination
                :current-page="q.page"
                :page-sizes="[2, 3, 5, 10]"
                :page-size="q.pagesize"
                layout="total, sizes, prev, pager, next, jumper"
                :total="total"
                @size-change="hSizeChange"
                @current-change="hCurrentChange"
              />
            </el-row>
          </el-tab-pane>
        </el-tabs>
      </el-card>
      <!-- 新增弹框 -->
      <el-dialog
        :title="isEdit?'编辑':'添加'"
        :close-on-click-modal="false"
        :close-on-press-escape="false"
        :visible.sync="showDialog"
        @closed="hClosed"
      >
        <el-form ref="roleForm" :model="roleForm" :rules="rules" label-width="100px">
          <el-form-item label="角色名称" prop="name">
            <el-input v-model="roleForm.name" />
          </el-form-item>
          <el-form-item label="角色描述">
            <el-input v-model="roleForm.description" />
          </el-form-item>
        </el-form>
        <!-- 底部 -->
        <el-row slot="footer" type="flex" justify="center">
          <el-col :span="6">
            <el-button size="small" @click="showDialog=false">取消</el-button>
            <el-button size="small" type="primary" @click="hSubmit">确定</el-button>
          </el-col>
        </el-row>
      </el-dialog>
    </div>
  </div>
</template>
<script>
import { addRole, deleteRoleById, getRoles, updateRole } from '@/api/setting'
export default {
  data() {
    return {
      q: {
        page: 1,
        pagesize: 2
      },
      roles: [],
      total: 0,
      showDialog: false,
      roleForm: {
        name: '',
        description: ''
      },
      rules: {
        name: [{ required: true, message: '角色名称不能为空', trigger: 'blur' }]
      },
      isEdit: false
    }
  },
  created() {
    this.loadRoles()
  },
  methods: {
    async loadRoles() {
      try {
        const res = await getRoles(this.q)
        // console.log(res)
        this.roles = res.data.rows
        this.total = res.data.total
      } catch (e) {
        console.log(e.message)
      }
    },
    hCurrentChange(page) {
      this.q.page = page
      this.loadRoles()
    },
    hSizeChange(pagesize) {
      this.q.pagesize = pagesize
      this.loadRoles()
    },
    // 根据 id 删除
    hDel(id) {
      this.$confirm('此操作将永久删除该角色, 是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).then(async() => {
        try {
          if (this.roles.length === 1 && this.q.page > 1) {
            this.q.page--
          }
          const res = await deleteRoleById(id)
          this.$message.success(res.message)
          this.loadRoles()
        } catch (e) {
          this.$message.error(e.message)
        }
      }).catch(() => {

      })
    },
    async hSubmit() {
      // 优化 promise 兜底校验
      const valid = await this.$refs.roleForm.validate().catch(e => e)
      if (!valid) return
      // 根据 isEdit 的状态判断是编辑还是添加
      this.isEdit ? this.doEdit() : this.doAdd()
    },
    hEdit(row) {
      // 为isEdit 赋值 区分
      this.isEdit = true
      // 显示弹层
      this.showDialog = true
      // 数据回填
      this.roleForm = { ...row }
    },
    hAdd() {
      this.showDialog = true
      this.isEdit = false
    },
    async doAdd() {
      const res = await addRole(this.roleForm).catch(e => e)
      if (res.code !== 10000) return this.$message.error(res.message)
      // 根据结果提醒用户
      this.$message.success(res.message)
      // 关闭 dialog
      this.showDialog = false
      // 跳转到正确页面
      if (this.total % this.q.pagesize === 0) {
        this.total++
      }
      this.q.page = Math.ceil(this.total / this.q.pagesize)
      // 重新更新数据
      this.loadRoles()
    },
    async doEdit() {
      const res = await updateRole(this.roleForm).catch(e => e)
      if (res.code !== 10000) return this.$message.error(res.message)
      // 根据结果提醒用户
      this.$message.success(res.message)
      // 关闭 dialog
      this.showDialog = false
      // 重新更新数据
      this.loadRoles()
    },
    // 关闭表单移除校验和重置表单
    hClosed() {
      this.$refs.roleForm.clearValidate()
      this.roleForm = {
        name: '',
        description: ''
      }
    }
  }
}
</script>
